{
  "$type": "site.standard.document",
  "description": "A glow plug exhibiting excellent durability, being capable of preventing short circuit potentially caused by adhesion of carbon, and being capable of detecting ion current accurately, is disclosed, as well as a method for manufacturing the same. The glow plug includes a metallic sleeve 1; a…",
  "path": "/patents/1111865",
  "publishedAt": "2001-07-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F23Q7/001",
    "NGK SPARK PLUG CO [JP]"
  ],
  "textContent": "A glow plug exhibiting excellent durability, being capable of preventing short circuit potentially caused by adhesion of carbon, and being capable of detecting ion current accurately, is disclosed, as well as a method for manufacturing the same. The glow plug includes a metallic sleeve 1; a cylindrical metallic shell 2, which holds the metallic sleeve 1; a terminal electrode 3, which is attached into the cylindrical metallic shell 2 while being insulated therefrom; a ceramic heating member 4, which is fitted into the metallic sleeve 1; and a glass coating layer 5. In the glow plug, a portion of an ion detection electrode 411 is exposed at the surface of an insulator 44 of the ceramic heating member 4. The exposed portion is coated with a glass coating layer 5, which is formed in such a manner as to extend all around the insulator 44 of the ceramic heating member 4 and has a thickness of 10-200 mu m and a softening point of not lower than 700 DEG C.",
  "title": "Glow plug"
}